solve: find the value of x and y between 0^(° ) and180^° which satisfy the simultaneous eqn sin(x+y)=((√2)/2) cos2x=−(1/2)


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Question Number 171858 by Mikenice last updated on 21/Jun/22

$s o l v e :$ $f i n d t h e v a l u e o f x a n d y b e t w e e n 0^{°} a n d 180^{°} w h i c h s a t i s f y t h e s i m u l t a n e o u s e q n$ $s i n (x + y) = \frac{\sqrt{2}}{2}$ $c o s 2 x = - \frac{1}{2}$
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